The excitation device is the core device of the trapezoidal thread vibration-assisted cold extrusion machine, which is a new type of mechanical torsional vibration device based on the torque balance state. On the basis of introducing its structural principle, the dual effect of auxiliary vibration on the trapezoidal thread cold extrusion process is analyzed. On the one hand, the change of the taper angle amplitude in the whole process is explored, as well as the influence of the spindle speed and the excitation frequency on the tap angle. It is concluded that the vibration of the excitation device is effectively transmitted to the working part of the tap. On the other hand, through the frequency domain analysis of machine signals under different operating conditions, the excitation device does cause the forced vibration of machine parts. Finally, by comparing the processing quality and the processing surface quality of the trapezoidal thread obtained by the traditional cold extrusion method and the vibration-assisted cold extrusion method, it is concluded that the auxiliary vibration of the exciting device is dominated by the beneficial effect.
基金资助:江苏省科技成果转化专项资金项目(BA2015164)。
引用本文:
崔晓飞,左敦稳,孙玉利,侯源君,廖泽南. 梯形螺纹振动辅助冷挤压机床的激振装置作用探究[J]. 航空制造技术, 2019, 62(3): 90-96.
CUI Xiaofei, ZUO Dunwen, SUN Yuli, HOU Yuanjun, LIAO Ze’nan. Research on Function of Excitation Device of Trapezoidal Thread Vibration-Assisted Cold Extrusion Machine. Aeronautical Manufacturing Technology, 2019, 62(3): 90-96.